Why Does Cyanosis Occur in Children with Tetralogy of Fallot

question 83

Multiple Choice

Why does cyanosis occur in children with tetralogy of Fallot?

• A)More carbon dioxide is present in the circulating blood.
• B)A large amount of hemoglobin in the general circulation is unoxygenated.
• C)The pulmonary circulation is overloaded and congested.
• D)The circulation is sluggish (slow)throughout the system.

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